x11/plasma6-plasma-integration reinstalled

[Graham Perrin]

Following the very recent upgrade to FreeBSD-ports on CURRENT 
(FreeBSD:15:amd64), it was necessary to force reinstallation of a 
package that was not touched by the upgrade:

plasma6-plasma-integration-qt6
<https://www.reddit.com/r/kde/comments/1lne10b/comment/n0fvzmu/>